
NPCA Blog: Production
-
Advantages & Load Tests: Lighter, Stronger Precast Concrete Floor System
There is a great need for a durable precast concrete floor structure that is lighter, stronger and more energy efficient, […]
-
How to Read a Cement Mill Certificate: Part 1
Everything that goes into our concrete mix includes some sort of documentation. It could be a certification, a mill test […]
-
Water-Reducing and Set-Controlling Admixtures
According to the American Concrete Institute (ACI), an admixture is defined as “a material other than water, aggregates, cementitious materials […]
-
Weighing In on High-Density Concrete
When designing a concrete mix, there is an entire smorgasbord from which to choose, depending on the application. Engineers usually […]
-
Air Entrainment versus Air Entrapment
All air voids in concrete are not created equal. Find out the difference between beneficial air entrainment and accidental, or […]
-
Precaster’s Notebook: Installing a Doghouse Manhole
Step 1: At the job site, locate the pipe where the manhole will be installed. Information should be shown on […]
-
Precaster’s Notebook: Anatomy of a Doghouse Manhole
Fig. 1 The doghouse manhole is commonly used to connect a lateral pipeline to an existing pipe in the ground. […]
-
5 Rules of Watertightness
Manufacturing specified watertightness in precast concrete products is straightforward if you play by the book Dutch legend has it that […]
-
Precast Math Tools: Calculate Manhole Blockout Volumes
How to precisely calculate large block-out volumes with a triple integral or handy chart A common calculation in precast concrete […]
-
How to Prepare for and Survive Environmental Inspections
Have you ever undergone an environmental inspection by a representative of a government agency, such as the U. S. Environmental […]
-
Manhole Frame and Cover Load Bearing Definitions
Clarifying the confusion between proof loads and design loads for castings Much confusion exists in the marketplace about the load-bearing […]
-
Precautions for Cold-Weather Concreting
For precast concrete producers in the northern latitudes, it is once again that time of the year when Mother Nature […]